git-annex/Annex/Queue.hs
Joey Hess bf460a0a98 reorder repo parameters last
Many functions took the repo as their first parameter. Changing it
consistently to be the last parameter allows doing some useful things with
currying, that reduce boilerplate.

In particular, g <- gitRepo is almost never needed now, instead
use inRepo to run an IO action in the repo, and fromRepo to get
a value from the repo.

This also provides more opportunities to use monadic and applicative
combinators.
2011-11-08 16:27:20 -04:00

41 lines
969 B
Haskell

{- git-annex command queue
-
- Copyright 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Annex.Queue (
add,
flush,
flushWhenFull
) where
import Common.Annex
import Annex
import qualified Git.Queue
{- Adds a git command to the queue. -}
add :: String -> [CommandParam] -> [FilePath] -> Annex ()
add command params files = do
q <- getState repoqueue
store $ Git.Queue.add q command params files
{- Runs the queue if it is full. Should be called periodically. -}
flushWhenFull :: Annex ()
flushWhenFull = do
q <- getState repoqueue
when (Git.Queue.full q) $ flush False
{- Runs (and empties) the queue. -}
flush :: Bool -> Annex ()
flush silent = do
q <- getState repoqueue
unless (0 == Git.Queue.size q) $ do
unless silent $
showSideAction "Recording state in git"
q' <- inRepo $ Git.Queue.flush q
store q'
store :: Git.Queue.Queue -> Annex ()
store q = changeState $ \s -> s { repoqueue = q }